Fatal error: Uncaught Error: Call to undefined function add_action() in /home/urgencp/www/wp-content/plugins/html5-video-player/rest-api/single-video.php:21 Stack trace: #0 /home/urgencp/www/wp-content/plugins/html5-video-player/rest-api/single-video.php(175): GET_SINGLE_VIDEO_ENDPOINTS->__construct() #1 /home/urgencp/www/wp-content/plugins/html5-video-player/rest-api/index.php(2): require_once('/home/urgencp/w...') #2 {main} thrown in /home/urgencp/www/wp-content/plugins/html5-video-player/rest-api/single-video.php on line 21